2018 collection from the late R&B great. Gerald Levert was an American singer, songwriter, producer and actor. Levert is best known for singing with his brother, Sean Levert, and friend Marc Gordon of the vocal group LeVert. Levert was also a member of LSG, a supergroup comprising Keith Sweat, Johnny Gill, and himself. Levert is the son of Eddie Levert, who is the lead singer of the R&B/Soul vocal group The O'Jays.